Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*7^j.

Terms

a(0) =1a(1) =7a(2) =7a(3) =49a(4) =98a(5) =49a(6) =343a(7) =1029a(8) =1029a(9) =343a(10) =2401a(11) =9604a(12) =14406a(13) =9604a(14) =2401a(15) =16807a(16) =84035a(17) =168070a(18) =168070a(19) =84035a(20) =16807a(21) =117649a(22) =705894a(23) =1764735a(24) =2352980a(25) =1764735a(26) =705894a(27) =117649a(28) =823543a(29) =5764801